CN103964730A - Method for synthesizing liquid accelerator by adopting heat transfer oil for heating - Google Patents
Method for synthesizing liquid accelerator by adopting heat transfer oil for heating Download PDFInfo
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- CN103964730A CN103964730A CN201410168765.6A CN201410168765A CN103964730A CN 103964730 A CN103964730 A CN 103964730A CN 201410168765 A CN201410168765 A CN 201410168765A CN 103964730 A CN103964730 A CN 103964730A
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Abstract
The invention discloses a method for synthesizing a liquid accelerator by adopting heat transfer oil for heating. The method comprises the following steps: adding 0.1 to 0.5 percent of a sodium polyacrylate solution into a reaction kettle; adding sodium hydroxide and aluminium hydroxide into the reaction kettle according to the molar ratio of 1.0 to 1.6; carrying out reaction for 1 to 3 hours under the condition that the reaction temperature is 120 to 140 DEG C and the mixing speed is 40 to 80 turns per minute; cooling to obtain the liquid accelerator with low alkalinity and high stability. The method has the advantages that the process is simple; industrialization is easy to realize; energies are saved; the pollution is low; as the heat transfer oil is adopted for heating, the reaction temperature is high, the reaction is sufficient, no precipitate exists, the product is high in stability, and no precipitate is generated after long-term standing; as the sodium polyacrylate solution serves as a medium liquid, the liquid accelerator is low in molar ratio and alkalinity, lower than 10 in pH value, and superior in performance to like products.
Description
Technical field
The present invention relates to a kind of material of construction, more particularly, relate to a kind of synthetic method of cement concrete admixture.
Technical background
Accelerating chemicals is the admixture that makes cement concrete rapid coagulation, it is indispensable admixture in sprayed concrete, and the most frequently used is the liquid accelerator of aluminate class, but due to working condition and process parameter control limited, mostly adopt fire coal or steam heating mode, adopt the aqueous solution to produce, and this mode of production exists energy consumption high, pollute large, temperature can not be controlled at top condition, cause the situations such as product stability bad (separating out precipitation) and time of coagulation be defective, and basicity is up to problems such as PH > 12.
Summary of the invention
The object of the present invention is to provide a kind of method of heat-conducting oil heating synthetic fluid accelerating chemicals, the method is simple to operate, pollute little, adopt heat-conducting oil heating, adopt sodium polyacrylate solution as dielectric fluid, reaction evenly, gained accelerating chemicals quality is good, stability is high, realizes low mol ratio synthetic fluid accelerating chemicals, and basicity is low.
For achieving the above object, the method for heat-conducting oil heating synthetic fluid accelerating chemicals in the present invention, comprises following process:
In reactor, first add the sodium polyacrylate solution of solution at 0.1%-0.5%, make the sodium polyacrylate solution in described reactor be warmed up to 60 DEG C-80 DEG C by thermal oil indirect heating;
The sodium hydroxide that is 1.0-1.6 by mol ratio again and aluminium hydroxide join in described reactor, and by the further indirect heating of described thermal oil, making the temperature of reaction in described reactor is 120 DEG C-140 DEG C;
In heating, utilize the agitator in described reactor to stir with the stirring velocity of 40-80 rev/min, after sustained reaction 1-3 hour, stop the cooling liquid accelerator that obtains low alkali high stability.
Described sodium polyacrylate solution is the aqueous solution.
The concentration of described polyacrylic acid sodium water solution is 0.1%-0.5%.
The mol ratio of described sodium hydroxide and aluminium hydroxide is 1.0-1.6.
Described thermal oil reacts with sodium polyacrylate, sodium hydroxide, aluminium hydroxide in reactor described in coil pipe type of heating.
Described reactor inside is provided with spiral coil pipe, described coil pipe is communicated with the heat-conducting oil heating equipment outside described reactor, and thermal oil after heating passes in described coil pipe the sodium polyacrylate in described reactor, sodium hydroxide, aluminium hydroxide are heated.
In the present invention, the method for heat-conducting oil heating synthetic fluid accelerating chemicals has the following advantages: process is simple, is suitable for industrialization, save energy, pollute little, adopt heat-conducting oil heating, temperature of reaction is high, sufficient reacting, adopts sodium polyacrylate solution as dielectric fluid, without precipitation, product stability is good, can place for a long time and not produce precipitation, realize low mol ratio synthetic fluid accelerating chemicals, basicity is low, PH < 10, performance is better than like product.
Brief description of the drawings
Fig. 1 is the process flow diagram of the method for heat-conducting oil heating synthetic fluid accelerating chemicals in the present invention.
Fig. 2 is the structural representation of coil pipe heating in the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment in the present invention is elaborated.
In the present invention, the method for heat-conducting oil heating synthetic fluid accelerating chemicals comprises the following steps:
In reactor, adding concentration (quality percentage composition) is 0.1%～0.5% polyacrylic acid sodium water solution, mode indirect heating reactor by YD-300 mineral oil with coil pipe heating, the coil pipe that passes into YD-300 mineral oil is arranged on to reactor inside, as shown in Figure 2, coil pipe arranges in the shape of a spiral, YD-300 mineral oil enters the coil pipe in reactor after nearly 100 DEG C outward after reactor is heated, polyacrylic acid sodium water solution in reactor is warmed up between 60 DEG C to 80 DEG C, by sodium hydroxide: sodium hydroxide and the aluminium hydroxide of the mol ratio of aluminium hydroxide between 1.0～1.6 joins in reactor, by again the thermal oil outside reactor being further heated to 200 DEG C of left and right, and pass into the coil pipe in reactor, make temperature of reaction in reactor between 120 DEG C～140 DEG C, utilize agitator low whipping speed in reactor is uniform stirring under the condition of 40～80 revs/min simultaneously, react after 1～3 hour, stopped reaction, the cooling liquid accelerator that obtains low alkali high stability.
Embodiment 1
0.1% the polyacrylic acid sodium water solution of 1000kg is first joined in reactor, by thermal oil indirect heating by be warmed up to 70 DEG C in reactor, add respectively again 186kg sodium hydroxide, 362kg aluminium hydroxide, continuing to be heated to temperature of reaction is 120 DEG C, low whipping speed is under the condition of 40 revs/min, uniform stirring reaction 2 hours, rear termination reaction, after cooling, obtain liquid accelerator, the PH < 9 of this liquid accelerator, is 3% for the volume of cement concrete, presetting period is 2-4 minute, and final setting time is 4-8 minute.
Embodiment 2
0.3% the polyacrylic acid sodium water solution of 1000kg is first joined in reactor, by thermal oil indirect heating by be warmed up to 60 DEG C in reactor, add respectively 240kg sodium hydroxide, 360kg aluminium hydroxide, continuing to be heated to temperature of reaction is 130 DEG C, low whipping speed is under the condition of 60 revs/min, uniform stirring reaction is after 1.5 hours, termination reaction, obtains liquid accelerator, the PH < 9 of this liquid accelerator after cooling.Volume for cement concrete is 2%, and the presetting period is 2-4 minute, and final setting time is 4-8 minute.
Embodiment 3
0.4% the polyacrylic acid sodium water solution of 1000kg is first joined in reactor, be warmed up to 80 DEG C, add respectively 174kg sodium hydroxide, 226kg aluminium hydroxide, is 135 DEG C in temperature of reaction, and stirring velocity is under the condition of 70 revs/min, react after 3 hours, termination reaction, obtains liquid accelerator product, PH < 10 after cooling.Volume is 4%, and the presetting period is 2-4 minute, and final setting time is 4-8 minute.
Embodiment 4
0.5% the sodium polyacrylate liquid of 1000kg is first joined in reactor, be warmed up to 80 DEG C, add respectively 200kg sodium hydroxide, 380kg aluminium hydroxide, is 140 DEG C in temperature of reaction, and stirring velocity is under the condition of 80 revs/min, react after 1 hour, termination reaction, obtains liquid accelerator product, PH < 10 after cooling.Volume is 4%, and the presetting period is 2-4 minute, and final setting time is 4-8 minute.
Embodiment 5
0.2% the sodium polyacrylate liquid of 1000kg is first joined in reactor, be warmed up to 80 DEG C, add respectively 150kg sodium hydroxide, 340kg aluminium hydroxide, is 120 DEG C in temperature of reaction, and stirring velocity is under the condition of 80 revs/min, react after 2.5 hours, termination reaction, obtains liquid accelerator product, PH < 10 after cooling.Volume is 4%, and the presetting period is 2-4 minute, and final setting time is 4-8 minute.
In sum, in the present invention, the method for heat-conducting oil heating synthetic fluid accelerating chemicals is by adopting thermal oil indirect heating, there is reaction evenly, pollute littlely, energy consumption is low, and temperature of reaction is high, be convenient to the advantages such as temperature control, by the accurate control of temperature, can ensure to generate the sodium aluminate of the low mol ratio of high stability in sodium polyacrylate solution, obtain the high accelerating chemicals of stability.
Claims (9)
1. a method for heat-conducting oil heating synthetic fluid accelerating chemicals, is characterized in that, comprises following process:
In reactor, first add the sodium polyacrylate solution of solution at 0.1%-0.5%, make the sodium polyacrylate solution in described reactor be warmed up to 60 DEG C-80 DEG C by thermal oil indirect heating;
The sodium hydroxide that is 1.0-1.6 by mol ratio again and aluminium hydroxide join in described reactor, and by the further indirect heating of described thermal oil, making the temperature of reaction in described reactor is 120 DEG C-140 DEG C;
In heating, utilize the agitator in described reactor to stir with the stirring velocity of 40-80 rev/min, after sustained reaction 1-3 hour, stop the cooling liquid accelerator that obtains low alkali high stability.
2. the method for heat-conducting oil heating synthetic fluid accelerating chemicals according to claim 1, is characterized in that, described thermal oil is mineral oil.
3. the method for heat-conducting oil heating synthetic fluid accelerating chemicals according to claim 1, is characterized in that, described sodium polyacrylate solution is the aqueous solution.
4. the method for heat-conducting oil heating synthetic fluid accelerating chemicals according to claim 2, is characterized in that, described thermal oil is YD-300 mineral oil.
5. the method for heat-conducting oil heating synthetic fluid accelerating chemicals according to claim 1, is characterized in that, described thermal oil reacts with sodium polyacrylate, sodium hydroxide, aluminium hydroxide in reactor described in coil pipe type of heating.
6. the method for heat-conducting oil heating synthetic fluid accelerating chemicals according to claim 5, it is characterized in that, described reactor inside is provided with spiral coil pipe, described coil pipe is communicated with the heat-conducting oil heating equipment outside described reactor, and thermal oil after heating passes in described coil pipe the sodium polyacrylate in described reactor, sodium hydroxide, aluminium hydroxide are heated.
7. the method for heat-conducting oil heating synthetic fluid accelerating chemicals according to claim 3, is characterized in that, the concentration of described polyacrylic acid sodium water solution is 0.1%-0.5%.
8. the method for heat-conducting oil heating synthetic fluid accelerating chemicals according to claim 3, is characterized in that, the mol ratio of described sodium hydroxide and aluminium hydroxide is 1.0-1.6.
9. the method for heat-conducting oil heating synthetic fluid accelerating chemicals according to claim 1, it is characterized in that, 0.3% the polyacrylic acid sodium water solution of 1000kg is first joined in described reactor, by described thermal oil indirect heating by be warmed up to 60 DEG C in described reactor, add respectively 240kg sodium hydroxide, 360kg aluminium hydroxide, continuing to be heated to temperature of reaction is 130 DEG C, low whipping speed is under the condition of 60 revs/min, uniform stirring reaction is after 1.5 hours, termination reaction, after cooling, obtain liquid accelerator, the PH < 9 of this liquid accelerator.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105906225A (en) * | 2016-04-14 | 2016-08-31 | 湖北腾辰科技股份有限公司 | Application of waste sewage in synthesis of liquid setting accelerator |
| CN108083673A (en) * | 2018-01-16 | 2018-05-29 | 山西大学 | The method for having alkali liquid quick-setting agent is prepared using the tail washings for producing methacrylaldehyde |
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| CN101665336A (en) * | 2009-09-23 | 2010-03-10 | 江苏博特新材料有限公司 | Preparation method of low-alkaline liquid accelerating agent |
| CN102219433A (en) * | 2011-05-04 | 2011-10-19 | 山西潞安环保能源开发股份有限公司 | Low-resilience high-strength sprayed concrete liquid accelerating agent and preparation method thereof |
| CN102219425A (en) * | 2011-04-15 | 2011-10-19 | 中铁隧道集团有限公司 | Alkali-free liquid accelerating agent and preparation method thereof |
| CN102249592A (en) * | 2011-06-01 | 2011-11-23 | 中国水利水电科学研究院 | Alkali-free chlorine-free high-early-strength liquid accelerator and preparation method thereof |
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2014
- 2014-04-25 CN CN201410168765.6A patent/CN103964730B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665336A (en) * | 2009-09-23 | 2010-03-10 | 江苏博特新材料有限公司 | Preparation method of low-alkaline liquid accelerating agent |
| CN102219425A (en) * | 2011-04-15 | 2011-10-19 | 中铁隧道集团有限公司 | Alkali-free liquid accelerating agent and preparation method thereof |
| CN102219433A (en) * | 2011-05-04 | 2011-10-19 | 山西潞安环保能源开发股份有限公司 | Low-resilience high-strength sprayed concrete liquid accelerating agent and preparation method thereof |
| CN102249592A (en) * | 2011-06-01 | 2011-11-23 | 中国水利水电科学研究院 | Alkali-free chlorine-free high-early-strength liquid accelerator and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105906225A (en) * | 2016-04-14 | 2016-08-31 | 湖北腾辰科技股份有限公司 | Application of waste sewage in synthesis of liquid setting accelerator |
| CN105906225B (en) * | 2016-04-14 | 2017-09-15 | 湖北腾辰科技股份有限公司 | A kind of application of discarded sewage in liquid accelerator synthesis |
| CN108083673A (en) * | 2018-01-16 | 2018-05-29 | 山西大学 | The method for having alkali liquid quick-setting agent is prepared using the tail washings for producing methacrylaldehyde |
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Address after: 044205 Ronghe chemical industry park, Wanrong County, Yuncheng City, Shanxi Province Patentee after: Shanxi jinwankang New Material Co., Ltd Address before: 044205 Shanxi city of Yuncheng province Wanrong County River Building Materials Industrial Park Patentee before: SHANXI JINDUN YUAN BUILDING MATERIALS Co.,Ltd. |
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